I found the trick to keep formatting in your comments

As we all know when we comment on a blog, article or forum post and we have more than one paragraph. Once we publish that comment the formatting you place will not be there in the post. However, i just discovered that after you post your comment to anything and after the page has finished refreshing. Click on Edit (to edit your comment) dont change anything, and then click save. After you submit your comment again it will post the formatting you originally typed.